| 1 |
The deficiency of elctrons in outermost shell of silicon atom is called. |
- A. Valent shell hole
- B. Doping
- C. Hole
- D. None of these
|
| 2 |
When a ray of light passes from a denser to a rare medium it; |
- A. bends away form the normal to the interface
- B. bends towards the normal
- C. does no bend
- D. non of the above
|
| 3 |
The Country which launched space station Mir into space: |
- A. France
- B. British
- C. America
- D. Russia
|
| 4 |
The potential of the neutral wire is. |
- A. Zero
- B. +220 volts
- C. 220 volts
- D. Changing
|
| 5 |
"SPACE Suit" secure astronauts from temperature ragne.............. in space. |
- A. 200 <sup>o</sup>C to - 110 <sup>o</sup>
- B. 250<sup> o</sup> to - 185<sup> o</sup>
- C. 150<sup> o</sup> to - 185 <sup>o</sup>C
- D. none
|
| 6 |
The instrument that measures current is called. |
- A. Voltmeter
- B. Circuit breaker
- C. Ammeter
- D. Switch
|
| 7 |
Russia launched its first artificial satellite into space in: |
- A. October 25,1950
- B. October 4, 1957
- C. October 10, 1969
- D. February 25, 1963
|
| 8 |
Natural gas is measured in: |
- A. square meter
- B. cubic meters
- C. Btu
- D. B and C both
|
| 9 |
Pakistan launched an indigenous artificial satellite Badar - l to space in; |
- A. July 1980
- B. July 2001
- C. July 1990
- D. July 1997
|
| 10 |
Which type of rays are used in the solar system fitted on ships and submarines to find the hidden secrets under water: |
- A. x - rays
- B. C.T Scan
- C. Ultrasound
- D. Light
|
